IOM 2020, Експеримент — Задача 7

Answer Sheet

Внимание: Бележка към темата

The source is the experimental-round answer sheet with the official answers overlaid in red; the task description with the experiment setup (videos) is not in the archive, and the answer-sheet pictures are available only with the answers drawn on them.

Условие

Q.7 a) Write down the formula linking the number of the ring NN, measured from the center of the picture, with the wavelength of light λ\lambda corresponding to the color of the ring, and with the optical path difference ll of the ordinary and extraordinary rays falling into a certain point of the ring.

Q.7 b) Using formulas and inequalities, write a short explanation of why the red ring of some number N is larger in diameter than the blue or green ring of the same number. When answering this question, disregard the phenomenon of dispersion.

Отговори

Решение

Experimental data for second harmonic generation.
KDP 0.5 cmKDP 2.0 cmKDP 4.0 cm
First harmonic Power, WattsSecond harmonic Power, WattsFirst harmonic Power, WattsSecond harmonic Power, WattsFirst harmonic Power, WattsSecond harmonic Power, Watts
110400.80166623.72534131.902
208502.5172017035.3159905.867
4023010.11136980126.11258026.88
7490032.1464740390.22294084.08
9320054.098290056937210240.2
12680097.89108400105054780565.9
147200131.11274001387813501157
165100169.71512001977977301574
171700184.216740023881163002319
17750026971380003224
1530004127
1554004331
Experimental data for third harmonic generation.
First harmonic Power, WattsThird harmonic Power, WattsSecond harmonic Power, WattsThird harmonic Power, Watts
77680.41479.01
129501.5432.830.13
260109.2667.851.41
4089030.771384123.9
5831070.12182217.3
76790110.93000318.9
988302104546557
117900265.54913577.8
137000412.95550678.3
154600502.8
162900685.1
166200676.7

Оригинал в Архива: exp.pdf